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K. TROBAGH & A. GORDS.

PROCESS OF AND APPARATUS FOR DISTILLING ALCOHOL.

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UNITED STATES j PATENT @FFICE KONRAD TROBAGH AND ALFRED GQRDS, OF BERLIN, GERMANY.

PROCESS OF AND APPARATUS FOR DlSTlLLlNG ALCOHOL.

SPECIFICATION forming partof Letters Patent No. 266,925, dated October 31, 1882.

Application filed December 30, 1881, (No model.)

T 0 all whom it may concern:

Be it known that we, KONRAD TROBAGH and ALFRED CORDS, both of Berlin, in the Kingdom of Prussia and Empire of Germany, have invented an Improved Process of Distilling Alcohol and Apparatus for Same, of which the following is aspecification.

Figure 1 is a vertical central section of our improved apparatus. Fig. 2 is a transverse section of the same on the line D E F, Fig. 1. Fig. 3 is a similar section on the line G H, same figure.

Our invention relates to an improved method of producing pure alcohol direct from the mash by means of chemically dephlegmating and freeing the spirits from amylic alcohol or fuseloil, and it also relates to an improved apparatus for carrying out our said invention.

In order to obtain the distillate of the mash in a pure and concentrated state, We make use of asbestus having been treated with a saturated solution of chloride of barium. For this purpose we preferably apply theasbestus in a fibrous felted or woolly state. and after heating the same in a pan or similar receptacle we pour over it the said solution, which consists of about fifteen per cent. of chloride of barium and eighty-five per cent. of water. The water then will evaporate while thechloride of barium is mixed with the asbestus. We separate the alcohol from the water and fusel-oil by heating the mash to the boiling-point, and pass the steam originating from the boiling mash through the apparatus illustrated in the accompanying drawings, the same being provided with layers of asbestus impregnated with chloride of barium. It is a peculiar feature of the hygroscopic qualities of asbestus-wool to retain especially steam at a very high temperature, and, together with the steam, it will also retain the fusel-oil by means of the impregnation of the asbestus with the chloride of barium.

drawings, consists of the main parts-that is to say, first, the distilling-column A; second, the condenser and first heater, B; third, the refining apparatus 0, for rectification.

Referring, first, to the distilling-column A, a are compartments, arranged one above the other, resting upon the receptacle 7) for the dregs or residue, and being closed near the top by the vaulted cover 0. In each of the said compartments a is arranged diagonally a steam-tight box, d, made of corrugated plate metal. The said boxes 61 are fastened in the upper and lower diaphragm of the said compartments a, and are connected with each other by means of the short pipes 00. The compartments a are provided with sieve-bottoms e and apertures f, which are applied for introducing the asbestus into the compartments to, and may be closed by any suitable means during the operations of our apparatus after a layer, Z, of the said asbestus treated with chloride of barium has been placed upon the said sieve-bottoms e.

The condenser B, by means of the short pipe y, is connected to the distilling-column A, the samerbeing made of corrugated plate metal, having a corrugated conical or tapering form, and provided with two ormore bottoms or diaphragms, 9, having their rims corrugated, so as to form on all sides apertures between the said bottoms g and the inner walls of the said condenser. The entire corrugated vessel is surrounded by a covering, h, to which are connected the mash-pipe t, the mash-eduction pipe 70, and the connecting-pipe l.

The refining apparatus 0 also consists, the same as the mash apparatus, of several compartments,a, having similar apertures, f, and the sieve-bottoms, being covered with similar layers of asbestus treated with chloride of barium, rest upon the hot steam-conduit m. The said compartments a are supported by a receptacle, n, of a similar construction as the receptacle 1), the same being connected to the condenser by means of the alcohol-steam connecting-pipe l, and eduction-pipe q serving as a conduit for the water of condensation.

m designates the hot-steam pipe leading throughout the apparatus. Steam enters the lower box, d, in the distilling-column A, as indicated by the arrows, passes through the pipe through the pipe it enters the distilling-colm to the refining apparatus O, and this is led off into the dregs accumulating in the receptacle b and frees the same of the last remainder of the spirits.

Oursaid invention operates as follows: Each of the sieve-bottoms in both the distilling-column and refining apparatus is provided with layers of chloride-of-harium asbestus of any suitable thickness. The apparatus is then heated by means of the hot-steam conduit m until the layers of asbestus treated with chloride of barium, Z, are heated to about 14:0 to 160 Fahrenheit. The mash, by the pipe 2', is then led into the first heater, consisting of the casing h, arranged around the condenser, and

umnAand runsdown the corrugated upper surface of the box dof the topmost compartment a, and then proceeds in the direction indicated by the arrows until itenters the receptacle 1). The boxes d are arranged in staircase form within the column D, extending from its top to bottom. The mash, by means of the corrugated staircase-like form of the boxes d, is compelled to flow slowly from compartment to compartment and to spread in thin layers over the large surface of evaporation offered by the corrugations of the boxes d,in consequence whereof it is quickly freed from the spirits, while the dregs flow down into the receptacle b,where they are freed from the last remainder of spirits by means of steam entering from the hotsteam conduit m, opening into receptacle 1). The vaporous spirits or alcohol-steam freed from the mash rise through the sieve-bottoms 6, arranged above the said surfaces of evaporation, and then pass through the layer of asbestus treated with chloride of barium, Z, covering the said sieve-bottoms, whereupon they enter the corrugated conical or tapering condenser B freed of nearly all amylic alcohol or tusel-oil. Thevaporousspiritsoralcohol-steam. not condensed by the condenser B, being of a strength of 95 to 98 Tralles, proceed to the refining apparatus or column 0, and pass in an upward direction from the receptacle it through the said sieve-bottoms and layers of asbestus treated with chloride of barium, in consequence whereof they are fully freed from the remaining fusel-oil and water, when, by the pipe 19, they are led to the cooling apparai tns. The steam or vapors condensed by the i condenser B also enter the said receptacle n by means of the waste-pipe q, and are heated by the lowest coiled part of the conduit m, in consequence whereof they are freed entirely of the remainder of the alcohol they still contain. The alcoholic vapor-fluid proceeds through the said layers of asbestus treated with chloride of barium and enters the cooling apparatus or refrigerator through the said pipep. The water of condensation from the receptacle n and the dregs from the receptacle b are edncted by means ofpipe-conduits in any convenient manner.

The refining apparatus 0 may as well be combined with a distillery of common construction, and will form the subjectmatter ofa subsequent application for patent.

We obtain by our new process, when using the apparatus hereinbefore described, first, most exhausted dregs; second, alcohol ofavery high degree freed of every particle of fusel-oil; third, all the fusel-oil. The latter is recovered in regenerating the asbestus treated with chloride of barium in an iron retort exposed to a very high temperature, the fusel-oil being obtained as a product of distillation. The said material-that is to say, the asbestus treated with chloride of barium, being then freed of fusel-oil at the same time-may be applied over and over again without losing its efficiency.

Having thus described our invention, what we claim is- The distilling-column A, having a series of compartments,a,onearranged above theother, and separated by perforated partitions, each partition having upon it a layer of asbestus impregnated with chloride of barium, and having upper corrugated surfaces, and placed as described, the said column being provided with a surrounding case, h, provided with a pipe, 45, and its interior chamber connected to the column A by. a pipe, 70, which enters the same above the upper part of the box or pipe (1, substantially as described.

,In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

KONRAD TROBAOH. ALFRED OORDS. Witnesses:

ROBERT E. SGHIMDT, BERTHOLD ROI. 

